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Natrolite & Aegirine

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TPX622521

Natrolite & Aegirine

Rare Mineral

Description Tabs

Description
Locality: 
Lugar da Nave Quarry, Monchique, Faro District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.8 × 6.5 × 2.4 cm
Weight: 
80.00gr
Description

Very nice Group of parallel growth crystals of natrolite partially covered by gonnardite in epitaxe, Aegirine and others minerals are also present. This is a good example of the mineralization of the nepheline syenite from the Monchique area.

Mineral Data
What's on the rock

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway
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